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BOUNDARY ACCESSIBILITY OF A DOMAIN QUASICONFORMALLY EQUIVALENT TO A BALL
Published online by Cambridge University Press: 23 December 2003
Abstract
A boundary point of a domain $D$ in $\Bbb{R}^n$ is said to be broadly accessible if it ‘almost lies’ on the boundary of a round ball contained in $D$. If $f$ is a quasiconformal mapping of the unit ball $B^n$ onto $D$, then it is shown that broadly accessible boundary points on $\partial D$ correspond under $f$ to a set of full measure on $\partial B^n$.This research was carried out while R. Näkki was visiting The University of Texas at Austin in 1985–86.
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- © The London Mathematical Society 2004
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